Percona Server has ported the Atomic write support for Fusion-io devices patch from MariaDB. This feature adds atomic write support for directFS filesystem on Fusion-io devices. This feature implementation is considered BETA quality.

If a slave was running with its binary log enabled and then restarted with the binary log disabled, Crash-Resistant Replication could overwrite the relay log info log with an incorrect position. Bug fixed #1092593.

Fixed the CVE-2012-5615 vulnerability. This vulnerability would allow remote attacker to detect what user accounts exist on the server. This bug fix comes originally from MariaDB (see MDEV-3909). Bug fixed #1171941.